1. Introduction
Thank you for purchasing the HOPESTAR A90 700W Wireless Bluetooth Speaker. This powerful portable speaker is designed to deliver deep bass and high-quality audio with its advanced 5-way crossover system and 8 custom-tuned drivers. Featuring Bluetooth 5.4 with AI Sound Effects, a removable 36000mAh battery, IPX6 waterproof rating, and support for karaoke and live streaming, the A90 is perfect for outdoor and indoor entertainment. Please read this manual carefully to ensure proper use and maintenance of your device.

Internal view of the HOPESTAR A90 speaker, highlighting its 700W power output and Neodymium speaker drivers for powerful bass.
2. Package Contents
Please check the package for the following items:
- HOPESTAR A90 Wireless Bluetooth Speaker
- Wireless Microphone (1 pc)
- AC Charging Cable
- User Manual (this document)
3. Setup
3.1 Charging the Battery
- Locate the OTG AC Charging Port on the speaker.
- Connect the provided AC Charging Cable to the speaker and a power outlet (AC Input Rating 110-240V~).
- The speaker features Smart Fast Charge Sync, allowing it to charge efficiently.
- The 36000mAh removable battery provides 6-8 hours of battery life.

Illustration of the AC direct connection mode for continuous power, showing universal voltage support and smart fast charge sync.
3.2 Powering On/Off
- Press and hold the Power button on the speaker's control panel to turn it on or off.
3.3 Bluetooth Pairing
- Ensure the speaker is powered on and in Bluetooth mode (indicated by a flashing Bluetooth light).
- On your mobile device, enable Bluetooth and search for available devices.
- Select "HOPESTAR A90" from the list.
- Once paired, the Bluetooth light will become solid, and you will hear a confirmation sound.
3.4 Connecting Multiple Speakers (Auracast)
The HOPESTAR A90 supports Auracast for stringing multiple speakers together for a wider sound experience.
- Ensure all speakers are powered on and in Bluetooth pairing mode.
- Follow the instructions for Auracast pairing (refer to the speaker's specific button combination for initiating Auracast pairing, usually a dedicated button or a long press of the Bluetooth button).
- Once connected, all speakers will play synchronized audio.

Multiple HOPESTAR A90 speakers wirelessly connected via Auracast for a synchronized audio experience in an outdoor setting.
3.5 Microphone Connection
The speaker includes a UHF wireless microphone.
- Turn on the wireless microphone.
- The microphone will automatically pair with the speaker.
- The UHF microphone connection distance is up to 20 meters.

User enjoying karaoke with the HOPESTAR A90 speaker and its paired wireless microphone, highlighting the UHF microphone connection distance of 20m.
4. Operating Instructions
4.1 Basic Controls
- Power Button: Press and hold to turn on/off.
- Play/Pause Button: Press to play or pause audio.
- Volume Buttons (+/-): Press to adjust volume.
- Mode Button: Press to switch between Bluetooth, USB, TF card, and AUX modes.
- Light Mode Button: Press to cycle through different RGB light strip patterns.
4.2 Audio Playback
- Bluetooth: After successful pairing, play audio from your connected device.
- USB/TF Card: Insert a USB drive or TF card with audio files into the respective port. The speaker will automatically detect and play the audio.
- AUX: Connect an external audio device using a 3.5mm AUX cable.
4.3 Microphone Usage (Karaoke)
- Once the wireless microphone is connected, you can use it for karaoke.
- The microphone features a frequency adjustment function (Frequency range: 675.3MHz-687MHz). Adjust as needed for optimal performance.
4.4 AI Sound Effects
The HOPESTAR A90 features AI Sound Effects (Chipset Version 5.4) for enhanced audio quality. These effects are automatically applied to optimize your listening experience.
4.5 OTG Live Broadcast
The OTG AC Charging Port supports live broadcasting. Connect your mobile phone via an OTG cable to the speaker. This allows for integrated audio recording and karaoke live streaming playback. When connected via OTG while charging, you can enjoy 12+ hours of uninterrupted streaming.

Demonstration of the OTG Live Broadcast feature, showing the HOPESTAR A90 connected to a mobile phone for live streaming with integrated audio recording.
5. Maintenance
5.1 Battery Care
- The 21700 36000mAh battery is removable and replaceable.
- For optimal battery life, avoid fully discharging the battery frequently.
- Store the speaker in a cool, dry place when not in use for extended periods.
- The battery is designed with eco-friendly materials and is suitable for recycling.

Close-up view of the HOPESTAR A90's removable battery compartment, emphasizing its replaceable and eco-friendly design.
5.2 Cleaning
- Wipe the speaker's exterior with a soft, damp cloth.
- Do not use harsh chemicals or abrasive cleaners.
- Ensure all ports are dry before charging or connecting other devices.
5.3 Waterproof Rating
The HOPESTAR A90 has an IPX6 waterproof rating, meaning it is protected against high-pressure water jets from any direction. It is suitable for outdoor use and can withstand splashes, but should not be submerged in water.
6. Troubleshooting
- Speaker does not turn on: Ensure the battery is charged. Connect the AC adapter and try again.
- No sound: Check the volume level on both the speaker and your connected device. Ensure the correct input mode is selected.
- Bluetooth connection issues: Make sure the speaker is in pairing mode. Turn off and on Bluetooth on your device, then try pairing again. Move closer to the speaker to ensure it's within the 10m wireless range.
- Microphone not working: Ensure the microphone is powered on and within the 20m UHF range. Check the microphone's battery if applicable.
- Distorted sound: Reduce the volume on both the speaker and your device. Ensure there are no obstructions between the speaker and the audio source.
7. Specifications

Diagram of the HOPESTAR A90 speaker with key dimensions and a summary of product specifications.
| Feature | Specification |
|---|---|
| Model | HOPESTAR-A90 |
| Total Power | 700W |
| Woofer Output | 4Ω 180W*2 |
| Mid-range Speaker | 4Ω 50W*2 |
| Tweeter | 4Ω 25W*2 |
| Ceramic Tweeter | 4Ω 45W*2 |
| Operating Voltage | DC 14.8V |
| Battery | 21700 36000mAh (Removable) |
| Battery Life | 6-8 hours |
| Chipset | Version 5.4 (AI Sound Effects) |
| Woofer (5-inch) Size | 145mm*2 |
| Mid-range Speaker (3.5-inch) Size | 93mm*2 |
| Tweeter (2.5-inch) Size | 66mm*2 |
| Ceramic Tweeter (2-inch) Size | 48mm*2 |
| Diaphragm Size | 250*280*2 |
| Port | OTG AC Charging Port |
| Support | BT 5.4 / USB / TF / AUX / Auracast / OTG / RGB / JL |
| Wireless Range | 10M |
| Frequency Response | 50Hz-20kHz |
| Waterproof Rating | IPX6 |
| AC Input Rating | 110-240V~ |
| Includes | 1PC wireless microphone |
| Color Options | Black, Blue, Gray, Army Green |
8. User Tips
- Optimize Battery Life: For longer outdoor sessions, utilize the AC direct connection mode to bypass battery drain and enjoy continuous playback.
- Enhanced Audio Experience: Experiment with the AI Sound Effects and different RGB light strip patterns to customize your listening and visual experience.
- Multi-Speaker Setup: Take advantage of the Auracast feature to connect multiple A90 speakers for a truly immersive and powerful soundstage, ideal for parties or large gatherings.
- Karaoke Fun: The included wireless microphone and its frequency adjustment function allow for clear vocals. Ensure the microphone is charged and within range for best performance.
- Live Streaming Ready: Use the OTG Live Broadcast feature with your mobile device for high-quality audio recording and streaming, perfect for content creators or virtual events.
9. Warranty and Support
For warranty information, technical support, or any product-related inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
10. Product Demonstration Video
Product demonstration video of the HOPESTAR A90 speaker, showcasing its features, RGB lights, and sound quality.





